System and method to detect presence using low-cost radar
US12153119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2021 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | May 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/536
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to detecting presence using a low-cost radar. A transmitted signal including repetitions of a transmitted signal is emitted from a transmitting antenna. A received signal including a combination of a plurality of reflections of the transmitted signal is received at receiving antennas. For each received signal, the received signal is processed to determine whether a threshold has been exceeded. When the received signal exceeds the threshold, presence due to a motion from a moving body is determined. When the received signal does not exceed the threshold, a periodicity of the received signal is measured to determine whether the periodicity of the received signal is within a vital range, and presence due to a vital sign is determined when the periodicity is within the vital range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.